Download Replacing Alternator 2001 BMW X5 4.4i (E53) SAV V8-4398cc – Switch off ignition. Follow instructions for disconnecting and connecting battery. See: Battery/Service and Repair Disconnect and cover battery negative lead. WARNING: Danger of scalding! Only perform these tasks on an engine that has cooled down. Remove alternator drive belt. Remove fan cowl. Drain coolant. Release bolts (1) on alternator. Release nut (1). Disconnect battery positive lead (2) from alternator. Disconnect plug (3). Release screw (4) and remove roller. Release screws (5) on alternator. Recycling A residual quantity of coolant emerges when the alternator is removed from the housing. Catch and dispose of escaping coolant. Observe country-specific waste-disposal regulations.